Patent Search Website

Illustration

www.uspto.gov

US patent search: Patents after 1970 provide full text search. The search engine of the website is powerful, but a user cannot download multiple patent image files at a time. The following two websites should be used together with this website.

free

www.freepatentsonline.com

US, EP patent search (including JP patents in the future): a user can download multiple PDF image files at a time.

free

www.pat2pdf.org

A user can input a patent number to download the PDF image file of the full text of a US patent specification from this website.

free

www.google.com/patents

US patent search. It allows a user to see patent images promptly.

free

ep.espacenet.com

EP patent searches: Besides EP patents, the website includes US, JP, German, UK, French, and PCT patents, but it only provides searches for the abstract of a patent specification.

free

www.ipdl.inpit.go.jp/homepg.ipdl

IPDL (Industrial Property Digital Library) of Japan: interface in Japanese or English.  The website mainly provides JP patent searches.  A user can download a PDF full-text file with the Japanese search interface.  A user who is not familiar with Japanese should click English patent abstract search (PAJ).

free

www.jpo.go.jp/sitemap_e

JP patent search (providing English searches for patent abstracts).  The website is a site map of the Japan Patent Office.  Click through to a search on IPDL (Industrial Property Digital Library).  On IPDL, click search by way of PAJ.

free

www.surfip.gov.sg

Singaporean worldwide patent database: including Singapore, US, UK, PCT, Taiwan, and China

free

www.delphion.com

Delphion worldwide patent database, including US, PCT, EP, and JP patents.  The special features of Delphion are the patent family and the legal status.

pay

www.sipo.gov.cn/sipo/zljs

China patent searches.  It does not provide full text searches.

free

twpat.tipo.gov.tw/tipotwoc/tipotwkm

Taiwan patent searches, providing key-word and full-text searches.  A user can download a full-text PDF file from the website.

free

www.wipo.int/pctdb/en

PCT patent searches

free

eng.kipris.or.kr

Korean patent searches

free

search.cnpat.com.cn/Search/CN

Chinese patent database search system

free

http://www.soopat.com/

Worldwide patent search.  A user can perform full-text searches, download a full-text file, and search for patent families.

free

www.wikipatents.com

A user can search for and download US, JP, UK, German, and Canadian patents from the website.

pay

www.drugfuture.com/cnpat/cn_patent.asp

A user can download multiple Chinese patents at a time.

free

pat365.com/search.jsp

Focusing on China, HK, and Taiwan patent cases of invention or utility models.

free

Trademark Search Website

Illustration

tmsearch.tipo.gov.tw/TIPO_DR/index.jsp

Taiwan trademark searches

free

sbcx.saic.gov.cn/trade/index.jsp

China trademark Website

free

www.uspto.gov/trademarks/index.jsp

US trademark searches

free

www.ipdl.inpit.go.jp/homepg.ipdl

IPDL (Industrial Property Digital Library) of Japan: interface in Japanese or English.  The website also provides JP trademark searches.

free

oami.europa.eu/CTMOnline/Request
Manager/en_SearchBasic

OHIM trademark searches in European Union

free

register.boip.int/bmbonline/intro/select.do?
language=en

Benelux trademark searches

free

detseng.kipris.or.kr/ndetsen
loin1000a.do?method= loginTM&searchType=S

Korean trademark searches

free